Spring-mattress



91.( QAM/y0( n. COOPER SSSS H.

A S P R I N G M A T T R E S S.

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UNITEo STATES.

.RUDOLPH COOlPEIVt/SMITBI, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR OFTO'ABRAHAM BUCHE, 0F PHILADELPHIA, PENN SYLVANIA.;

Paritair OFFICE.

ONE-HALF 'SPRING-MATTRESS.

Specification of Letters .Patent Pdtented F919, 22, 1921 Application medMarcil 1, 1920. serial No. 362,204.

To @ZZ whom t may concern.' f A.

Be it known that I, RUDOLPH COOPER@ snrrrfr, a citizen of the UnitedStates, and resident of the city of Montreal, in the Province of Quebecand Dominion of Can'- ada, have invented certa-in' newand usefulImprovements in Spring- Mattresses, Vof which the following is a full,clear, and exact description. This invention relates to improvements inspring mattresses, and the object of the invention is to provide amattress so conf structed that the entire widththereof contributes tothesupport of a person lying on any part of the mattress.

A further object is to provide a spring `which may be easily and cheaplymanufactured.

Another object is to provide a spring free from projections which wearout an upholstered mattress placed thereon.

'Ihe device consists briefly of a rectangular frame of any suitable formhaving head and foot rails between which a fabric according to thisinvention is stretched. The fabric comprises angularly ydisposed s randsinterwoven and extending between the head and foot rails, to which theyare attached by means of helical springs. The

ends of certain of these angularly disposedv ,strands are attached toheavier strands or marginal members extending between and at rightangles to the head and foot rails and supported therefrom yby springs.

In the drawings which illustrate the 1nventiongvFigure 1 is a partialplan view of av spring mattress or bed thisinvention.

Fig. 2 is-a sideelevation of the device. Referring more particularlytothe drawings, 11 designates the head and foot rails bottom accordingto of a frame which are held apart by side rails 12. The bed bottomfabric comprises a plurality of angularly disposed strands 13. whichextend between the head and foot rails or between one of these rails anda marginal member 14, which is supported between the head and foot railsandfat right angles thereto by springs 15. The strands 13 may be wiresor thin flat bands of metal or may be of any other suitable material andare preferably but not necessarily interwoven, as shown in Fig. 1. Theends of each strand are connected to the frame or to the frame andmarginal members 14 by helil formed inthe rails 11, so that themanu-vfact'uring costV of the device is kept as low as possible. The degreevof Vangularity of the strands Vwith respect to the framev members maybeValtered as desired, but it has been found that for all practicalpurposes, the best results are obtained when the strands extend parallelwith lines extending from approximately the center of one end rail tothe corners of the other rail (in a double bed mattress). At the cornersof the mattress wherevery little weight is to be supported, the strandsmay extend in one direction only, that is, `the short crossing strandsmay be omitted, as shownin Fig. 1. It will beunderstood, however, thatthe corners may be filled in in the same manner as the center of thestructure. In order to facilitate` the attachment ofthe strands andtheir springs to the marginal members 14, the inner edges of thesemembers may be provided with notches 18 having their sides 19 parallelwith the strands and their ends 20 transverse of the strands. Thesenotches receive the springs as shown and avoid all possibility of thesprings rubbing on the edge of the-member 14, as would be the case if itwere not notched.

n win be Obvious from Fig. 1 that the weight of a person lying on anypart of thisA n sustained to a certain extent by every intersectingstrand and as these intersecting strands intersect strands parallel withthe first, theloadV is distributed over substantially the wholestructure. The angular disposition of the strands Aavoids the localsagging of the structure, such as is commonly found in fabrics havinglongitudinal extending members. This elimination of sagging is due tothe fact that all the sup-V porting springs receive substantially equalload.

While the strands are preferably interwovento avoid rattling, theinvention is not limited to such interweaving. It will be obvious thatwhile the strands have been l shown connected directly by the springs tothe end rails, transverse bars may be interposed betweenthe strand endsand springs. Itwill also be obvious that the marginall members 14 may beattached directly to the end rails without the interposition of the,springs l5, thus producing a rigid, rectanmarginal members reslliently`supported be-VH- ed to the same point of the endrails.

gularv frame. By altering the j angle at which the strands lie to theendv rails, oppositely inclined strands may be connected to the samepoint ofthe marginal members in the same manner'in which they areconnect- Having thus described I claim is ;--l 3 y v *y 1. Ina bedbottom fabric, end rails, continuous strands extending between saidrails at Vpredetermined angles thereto, flexible' my invention, whattween the extremities of the end rails, saidv marginal members beingnotched at adj acent edges, and further strands parallel with vthe firstnamed extending between an l ginal members resiliently connected attheends to said end rails, and strands extending inl straight linesbetween' the two end rails and between the marginal members and the`endrails.

In witness whereof, vI have hereuntoY set my hand.

RUDOLPH ooorERsMrrH. i

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